207961970645 has 48 divisors (see below), whose sum is σ = 294933586752. Its totient is φ = 139544570880.

The previous prime is 207961970627. The next prime is 207961970659. The reversal of 207961970645 is 546079169702.

It is not a de Polignac number, because 207961970645 - 2¹² = 207961966549 is a prime.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26923754 + ... + 26931476.

It is an arithmetic number, because the mean of its divisors is an integer number (6144449724).

Almost surely, 2^207961970645 is an apocalyptic number.

It is an amenable number.

207961970645 is a deficient number, since it is larger than the sum of its proper divisors (86971616107).

207961970645 is a wasteful number, since it uses less digits than its factorization.

207961970645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10662 (or 10649 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 56.

The spelling of 207961970645 in words is "two hundred seven billion, nine hundred sixty-one million, nine hundred seventy thousand, six hundred forty-five".